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'UNITED STATES PATENT OFFICE.

HERBERT CLAYTON, OF NEW YORK, N. Y.

GAS-STOVE.

SPECIFICATION forming part of Letters Patent No. 492,712, dated February28, 1893. Application tiled March 3, 1892. Serial No. 423.665. (Nomodel.)

To all whom t may concern.-

Be it known that I, HERBERT CLAYTON, of New York, in the county of NewYork and State of New York, have invented certain new and usefulImprovements in Gas-Stoves; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as willenable others skilled in the art to which it pertains to make and useit, reference being had to the accompanying drawings, which form part ofthis specification.

My invention relates to improvements in gas stoves; and it consists incertain novel features of construction which will be fully describedhereinafter and particularly pointed out in the claims.

One of the objects of my invention is to provide a burner of thepeculiar construction hereinafter s how and described, whereby a greaternumber of openings are obtained than in the ordinary circular burner,and also to make perfect combustion and thereby prevent the escape ofunburned gas, which makes an unpleasant odor, which is commonA to theordinary circular burner, by feeding air between the escaping andburning gas flames, which commingles therewith and makes completecombustion, and to further provide against the escape of unburned gas,by also feeding to the outside of the flames a current of air, thusmingling air with the lburning,

gas, which will cause the entire iiow of gas to be consumed.

Another object of my iuventionis to give a`uniform heat to the underside of a vessel placed upon the stove, by distributing the flameentirely over its bottom, instead of burning it in a ring as in theordinary burner, which cooks a portion of the material in the Vessel,while the edges and center are only heated, and left comparatively raw.

A further object of my invention, is to provide the burner with a smallcentral burner and a chamber for feeding gas thereto, and with a largesurrounding burner, and a chamber therefor, and to provide a means foradmitting gas to the small central burner only when the cock or valve isturned a slight distance, which will prevent the escape of unburned gasthrough the large burner, and then to admit gradually the gas to thelarge burner as the cock is further opened, thus making it possible tohave only a small flame Without the escape of unburned gas into the roomwhich makes an unpleasant and unhealthy odor. Where gas is admitted tothe large and small burner in the usual manner, when only a small flowof gas is admitted the liow is not sufficient to supply the large burnerwith sufficient gas to be caught from the small burner, but at the sametime there is a small portion of gas escaping from the large burnerwhich is notignited, and this I avoid by means of the constructionhereinafter shown and described.

In the drawings:-Figure l isa perspective view of a stove which embodiesmy invention complete. Fig. 2 is a central vertical section takenlongitudinally through the horizontal portion of the supply pipe.

A indicates a base or frame which is preferably of the construction hereshown in detail, but which can be varied if found convenient withoutdeparting from myinvention. The burner is composed of the upper portionB and the lower portion O, both of which are made in the shape of astaras illustrated,

whereby radiating arms are provided. Extending radially from the upperportion B and preferably cast as a part thereof are the vessel or pansupporting arms D, which have their outer ends connected with the innerperiphery of the outwardly and upwardly eX- tending flange E, of thebase A, and are also cast as a part thereof. In this manner it will beseen that the base A, the arms D and the upper. portion B of the burnerare all cast integral, which greatly decreases the cost of manufacture.

The lower portion O of the burner is provided at its upper edge with thegas escape openings G, and is supported in any suitable Y manner. Ashere shown, the under portion lobtained than where it is made circularor oval in form, and of the same diameter, as will be understood. Alsoby making the burner with radiating arms, air passes upward in themanner hereinafter described between the said arms, and mingles with andbetween the llames of the adjacent arms of the burner, which makes a.perfect combustion, and prevents the escape of unconsumed gas, whichunconsumed gas would make an unpleasant odor in Athe room. The escape ofunconsumed gas is a common fault with the ordinary circular burner, asit is impossible to get the air to mingle with the flame of a circularburner, since it is admitted to the outer side of the llame only.

At the center of the burner is a small dome or burner J, which isprovided with a series of escape openings K for the gas. This is common,and to it alone I do not make any claim. Depending from the inner sideofthe upper portion of the burner is a circular flange L, which forms achamber M for the gas which is fed to the burnerJ.

The lower portion of the burner is provided with a large chamber N whichfeeds gas to the openings G of the arms of the large burner, and thischamber is connected with the Vertical portion II of the supply pipe.The interior diameter of the annular or circular flange L is the same asthe interior diameter of the vertical portion H of the supply pipe, andsliding and fitting snugly, and yet easily within the flange L andvertical portion H of the supply pipe, is a short tube or cylinderPwhich forms a valve for feeding gas to the burner J alone when raised,and for admitting gas to them both when it isr lowered, as shown indotted lines in Fig. 2. This cylinder is operated by means of a bellcrank lever Q, which is pivotally supported in any suitable mannerwithin the vertical portion H of the supply tube, with its upper andlong end resting against a depending and inwardly turned lip R, asshown. Connected to the short and lower end of this bell crank lever Qis an operating rod S which extends outward through the horizontalportion of the supply pipe and outside of the supply pipe through anunder air opening T, and then along the outside of the pipe to the lowerend of the supply cock a. The under or lower extending end b of the cockis made in the form of a cam or crank as shown, and the outer end of theoperating rod S is formed into an eye c, which surrounds the cam orcrank.-v This cam is placed upon the outer side of the lower end of thecock as shown in Fig.l2, so that when the cock is turned as there shownto admit a full flow of gas the lower short end of the bell crank leveris pulled outward as shown, and the longer end lowered which allows thecylinder P which rests thereon to drop with its upper edge flush withthelowcr edge of the large chamber N of the burner, thus admitting gasto the large and small chamber. Vhen the cock is turned around to extendat right angles to the portion I of the supply pipe the rod S is forcedinward, and the long end of the bell crank lever upward, thus raisingthe cylinder or valve P up within the chamber M which feeds gas to thesmall burner J as illustrated in dotted lines.

Vhen the cylinder of Valve P is in the position shown in dotted lines,the flow of gas is entirely cut off, but when the cock is turnedslightly, a small amount ot' gas is allowed to flow to the cylinder P,and the cylinder P allowed to drop only a short distance, but not enoughto be below the flange L which forms the chamber M for feeding gas tothe burner J. In this manner when a small flow of gas is turned on, thegas is admitted to the small burner only, thus preventing the escape ofgas to the large chamber N and from there unconsurned through the largeburner as would otherwise be the case. As the cock is turned around moreand more open, the cylinder is gradually lowered, until gas is admittedto the large chamber N. In this manner the gas is allowed to flowgradually into the large chamber N, which will permit of a large orsmall flow to the large burner as desired. The upper end of the cylinderextends into the chamber M sufficiently far to allow of the cock beingopened enough to supply as much gas as the small burner will consumebefore the cylinder drops below the flange L to admit gas to the largechamber. 'When the cock is opened enough-to supply more gas than thesmall burner will consume, then the cylinder drops below the flange Land allows the gas to overflow into the large chamber and be fedgradually to the large burner, and as the gas escapes from the largeburner it is automatically lighted bythe flame of the small burner aswill be understood. A

Placed within the base A is a pan d, which is provided at its centerwith an opening having a Vertical flange e, and this opening isconsiderably larger than the vertical portion I-I of the supply pipewhich allows the air to flow through this opening up between the arms ofthe burner, and thereby between the llames of the adjacent arms asindicated by arrows, thus furnishing a perfect combustion and completelyconsuming all of the gas asv before described. This pan d is provided atits outer edge with a vertical portion f, and an annular horizontaloutwardly extending flange h, which rests upon lugsfi extendinginwardfrom the legs of the base A. The pan d, is smaller than the interiordiameter of the base A, to form an annular space m,and air passesthrough this space outside of the several arms while air passes betweenthe arms through the central annular space c, thus making completecombustion, thereby avoiding the escape of unconsumed gas, and theconsequent odor. Owing to theiange e, and the vertical portion f, theforms a receptacle to catch all drippings or pan overflow from thematerial being cooked. So also it prevents the heat from the burnerbeing radiated downward upon the table and IIO instead reflects orradiates it upward, thus increasing the heat of the burner. This pan d,is supported within the base by having its ange h rest upon lugs fi, ofwhich there are preferably three and the said iiange is provided with anotch h. By this construction the said notch can be made to registerwith one of the lugs t', and the pan removed for removing its contents.

The horizontal portion of the feed or supply pipe is provided with airopenings r in its side and the air opening T in the under side. When thesmall burner alone is burning, and a small supply of gas is being fed,it is advantageous to not feed so much air with the gas as when thelarge and small burner are both burning, and to accomplish this Iprovide a plate or disk s, which is secured to the rod S outside of theunder opening T.

Vhen the tube or cylinder valve P is up, as shown in full lines, thedisk s covers the opening T and prevents air from entering, but when thevalve is down`,the plate or disk sis drawn back by the rod S and air isadmitted to the supply pipe. In this manner the amount of air fed to theburner with the gas is automatically regulated according to whether thesmall burner is being used alone, or the both burners being used.

I have described my burner as consisting of a star shape, to formradiating arms, for the purpose set forth. However, I show in additionto the star shape, a ring A which connects the outer ends of theseradiating arms, which ring is provided with notches B around its innerand outer periphery for the escape of gas to be burned. This enlargesthe darne and increases the heating capacity of the burner. In thisconstruction it will be seen that the air will pass up between the armsof the star and the inner edge of the ring, to make perfect combustion,and air supplied to the dame at the outer edge of the burner through theopening at the periphery lof the pan.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

l. A gas stove comprising a base, a burner having two chambers, one forfeeding asmall burner and one for feeding a large burner, a supply pipe,a cock therein, a valve for closing the opening to the large chamber,and an operating connection between the valve and the cock, whereby whenthe cock is turned the valve is simultaneously operated, substantiallyas specified.

2. A gas burner having alarge and a small burner, the small burner beingat the center, an annular ange depending below and inclosing the inletto the small burner, a chamber surrounding the flange for feeding the'large burner, a supply pipe having a vertical portion, a tube which litswithin the vertical portion of the supply pipe and the said iiange, anda means for operating the said tube,where by it formsa valve asdescribed, substantially as set forth.

3. A gas burner having a small central burner, and a large surroundingburner, a circular flange depending and surrounding the inlet to thesmall burner, a supply pipe having a vertical portion, a tube which fitswith the said vertical portion of the supply pipe` and the said fiange,a bell crank lever pivoted 7 5 below the tube, one end of the leversupporting the tube, an operating rod connected to the opposite end ofthe lever, and a means for operating the said rod, and thereby the saidtube for admitting and cutting oft gas to and from the largechamber,substantially as specified.

4. A gas burner having a large and a small burner, the small burnerbeingat the center, a iiange depending and surrounding the inlet to thesaidsmall burner, a supply pipe having a vertical portion and a4horizontal portion, a tube fitting within the vertical portion of thepipe and the said flange for the purpose described, air inlets in thehorizontal portion of the supply pipe, a means for raising and loweringthe said tube, a rod connected with and operating this means andextending through the horizontal portion of the supply pipe and outsidethereof to be op- 95 erated, a cock to which it is secured and operated,and Aa plate secured to the said rod outside of the said air opening,whereby when the rod is operated to admit gas to the large burner theair opening is opened, substantially as 10o specified.

5. A gas stove comprising a base, a supply pipe having a vertical and ahorizontal portion, a burner secured to the upper end of the pipe andhaving radiating arms with openings at its edges, and a pan within thebase provided with a central opening of greater diameter than the supplypipe to feed air up between the said arms and having an annular upwardlyextending flange, the diamerio ter of the pan being less than theinterior diameter of the base, whereby air is fed to the outside of theflame, substantially as and for the purpose set forth.

In testimony whereof I afx my signature in 1 I 5 presence of twowitnesses.

HERBERT CLAYTON.

Witnesses:

ALFRED S. WILLsoN, ROLAND A. FITZGERALD.

